Recommended · for some experience
#198: Basics of a Vbe Multiplier: what it is, how it works & where it is used
Why people recommend it
Explains the Vbe multiplier, or rubber diode, and how it sets bias in class B output stages; the usual link when someone uses plain diodes instead.
Watch for: a lab notes PDF accompanies it
In their words
There is a really good video on this circuit, how it works and its applications:
blondiepassesby on electronics.stackexchange.com, Jul 2015. CC BY-SA.
This video on Vbe multipliers will help you Vbe multiplier and class B output.
owg60 on electronics.stackexchange.com, Nov 2016. CC BY-SA.
I found an example in the AofE (figure 2.78 in the new edition) and this w2aew video as well ([video]).
Anthony on electronics.stackexchange.com, Jan 2018. CC BY-SA.